The effect of soil quality on fertilizer use rates among smallholder farmers in western Kenya
Studies of fertilizer use in sub-Saharan Africa have been dominated by analyses of economic and market factors having to do with infrastructure, institutions, and incentives that prevent or foster increased fertilizer demand, largely ignoring how soil fertility status conditions farmer demand for fertilizer. We apply a switching regression model to data from 260 farm households in western Kenya in order to allow for the possibility of discontinuities in fertilizer demand based on a soil carbon content (SCC) threshold. We find that the usual factors reflecting liquidity and quasi-fixed inputs are important on high-SCC plots but not on those with poorer soils. External inputs become less effective on soils with low SCC, hence the discernible shift in behaviors across soil quality regimes. For many farmers, improved fertilizer market conditions alone may be insufficient to stimulate increased fertilizer use without complementary improvements in the biophysical conditions that affect conditional factor demand.
|Date of creation:||2009|
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- Vakis, Renos & Sadoulet, Elisabeth & de Janvry, Alain, 2003.
"Measuring Transactions Costs from Observed Behavior: Market Choices in Peru,"
Department of Agricultural & Resource Economics, UC Berkeley, Working Paper Series
qt7p81h66q, Department of Agricultural & Resource Economics, UC Berkeley.
- Vakis, Renos & Sadoulet, Elisabeth & de Janvry, Alain, 2003. "Measuring transactions costs from observed behavior : market choices in Peru," CUDARE Working Paper Series 962, University of California at Berkeley, Department of Agricultural and Resource Economics and Policy.
- Moser, Christine M. & Barrett, Christopher B., 2003.
"The Complex Dynamics Of Smallholder Technology Adoption: The Case Of Sri In Madagascar,"
14735, Cornell University, Department of Applied Economics and Management.
- Christine M. Moser & Christopher B. Barrett, 2006. "The complex dynamics of smallholder technology adoption: the case of SRI in Madagascar," Agricultural Economics, International Association of Agricultural Economists, vol. 35(3), pages 373-388, November.
- Hotchkiss, Julie L, 1991. "The Definition of Part-Time Employment: A Switching Regression Model with Unknown Sample Selection," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 32(4), pages 899-917, November.
- Bruce E. Hansen, 1996.
"Sample Splitting and Threshold Estimation,"
Boston College Working Papers in Economics
319., Boston College Department of Economics, revised 12 May 1998.
- Marc F. Bellemare & Christopher B. Barrett, 2006.
"An Ordered Tobit Model of Market Participation: Evidence from Kenya and Ethiopia,"
American Journal of Agricultural Economics,
Agricultural and Applied Economics Association, vol. 88(2), pages 324-337.
- Bellemare, Marc F. & Barrett, Christopher B., 2005. "An Ordered Tobit Model of Market Participation: Evidence from Kenya and Ethiopia," Working Papers 14748, Cornell University, Department of Applied Economics and Management.
- Barrett, Christopher B., 2008. "Smallholder market participation: Concepts and evidence from eastern and southern Africa," Food Policy, Elsevier, vol. 33(4), pages 299-317, August.
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